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Commit 40d97b89 authored by Philippe Rétornaz's avatar Philippe Rétornaz Committed by Sascha Hauer
Browse files

mx31moboard: Add poweroff support 



This patch add poweroff support on mx31moboard platform.
A watchdog timeout is generated while enabling the watchdog
reset IO to trigger a PMIC poweroff.

Signed-off-by: default avatarPhilippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent bbb43363

arch/arm/mach-imx/mach-mx31moboard.c

+17 −0
Original line number Diff line number Diff line
@@ -28,6 +28,9 @@ 
#include <linux/spi/spi.h>

#include <linux/types.h>

#include <linux/memblock.h>

#include <linux/clk.h>

#include <linux/io.h>

#include <linux/err.h>



#include <linux/usb/otg.h>

#include <linux/usb/ulpi.h>
@@ -490,6 +493,18 @@ static int __init mx31moboard_init_cam(void) 


}



static void mx31moboard_poweroff(void)

{

	struct clk *clk = clk_get_sys("imx2-wdt.0", NULL);



	if (!IS_ERR(clk))

		clk_enable(clk);



	mxc_iomux_mode(MX31_PIN_WATCHDOG_RST__WATCHDOG_RST);



	__raw_writew(1 << 6 | 1 << 2, MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));

}



static int mx31moboard_baseboard;

core_param(mx31moboard_baseboard, mx31moboard_baseboard, int, 0444);
@@ -528,6 +543,8 @@ static void __init mx31moboard_init(void) 


	moboard_usbh2_init();



	pm_power_off = mx31moboard_poweroff;



	switch (mx31moboard_baseboard) {

	case MX31NOBOARD:

		break;

arch/arm/plat-mxc/include/mach/iomux-mx3.h

+1 −0
Original line number Diff line number Diff line
@@ -735,6 +735,7 @@ enum iomux_pins { 
#define MX31_PIN_KEY_COL5_KEY_COL5	IOMUX_MODE(MX31_PIN_KEY_COL5, IOMUX_CONFIG_FUNC)

#define MX31_PIN_KEY_COL6_KEY_COL6	IOMUX_MODE(MX31_PIN_KEY_COL6, IOMUX_CONFIG_FUNC)

#define MX31_PIN_KEY_COL7_KEY_COL7	IOMUX_MODE(MX31_PIN_KEY_COL7, IOMUX_CONFIG_FUNC)

#define MX31_PIN_WATCHDOG_RST__WATCHDOG_RST	IOMUX_MODE(MX31_PIN_WATCHDOG_RST, IOMUX_CONFIG_FUNC)





/*